111343961 has 2 divisors, whose sum is σ = 111343962. Its totient is φ = 111343960.

The previous prime is 111343957. The next prime is 111343979. The reversal of 111343961 is 169343111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78499600 + 32844361 = 8860^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 111343961 - 2² = 111343957 is a prime.

It is not a weakly prime, because it can be changed into another prime (111343901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55671980 + 55671981.

It is an arithmetic number, because the mean of its divisors is an integer number (55671981).

Almost surely, 2^111343961 is an apocalyptic number.

It is an amenable number.

111343961 is a deficient number, since it is larger than the sum of its proper divisors (1).

111343961 is an equidigital number, since it uses as much as digits as its factorization.

111343961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 111343961 is about 10551.9647933454. The cubic root of 111343961 is about 481.0854501018.

The spelling of 111343961 in words is "one hundred eleven million, three hundred forty-three thousand, nine hundred sixty-one".